Sergio would have loved the XNR and the asymmetrical design language that briefly flowed from that.The best story I ever heard about a Ferrari designer(*), in fact one of my favourite stories about someone with a good and slightly silly sense of humour, was a story about Sergio Pininfarina. Apparently at one Geneva International Motor Show he was being shown some high-end car design that he really didn't like. He expressed his disapproval and then walked round to the other side of the car and exclaimed "oh no, they've done the same thing on the other side". I heard that on an interview once with someone well immersed in the automotive industry. I really hope the story is true.
(*) Or rather someone very heavily associated with some iconic Ferrari designs, I believe he worked in a consultant capacity all his career and was never a Ferrari employee.